Combined spark-plug, primer, and indicator.



A P. SEISS & G. W. ROHRIG. COMBINED SPARK PLUG, PRIMER, AND INDICATOR.

APPLICATION iILED MAR. 25, 1913.

1,108,009. Patented Aug. 18, 1914,

QNDIBATUR AI'TORNEYS sign. of

AUG-U31 EBILIP SEISS, OF OMAHA, NEBRASKA, ANLDv GEORGE WILLIAM RDHRIG, OF

COUNCIL BLUFFS, IOVJA.

;GOBBINED. SHA K-BLUE, RI ER A D INDICA R- State oi Nebraska, and GEORGE ROH IG,

a citizen, of; the United States, and resident of Council Bluffs, in the county of Pottawattamie and State of Iowa, have invented a new and Improved, Combined Spark- Plug, Primer, and Indicator, of which the fo lowing is a full. clear, and exact descriplion.

Qur invention relates tov spark plugs for internal combustion engines, and it is a dethe nv nt an o p d a pa plug, and appurtenances which, iii-addition to tii e usual functions, oi the plug in pro.

ducting the ignitionsparhwill serve as a pringer, and, a so serve to indicate. whether a particular cylinder is doing its work or doing; it properly. v

litis a design or our invention to provide device. oi the indicated character,

efficient in operation, and characterised by simplicity ofadjustinent and control.

1 (v-distinguishing; featuresof; the invention, and; thefimportant structural elements,

characterizing the preferred embodimentwhich. is illustrated as an example, will be moxie particularly explained in the specific description llfilelpg tfi l to, be given.

Relierence is to,be.had to the accompanyin}; drawings forming a part of. this specification, in which Slmllar-eharacters of ref ven end c te, or esponding Part n the views,

F ig re'. 1, is. a vertical, section of a. (30m;

binatipn spark; plug, primer and indicator embodying our invention, and showing the same a'pplied; Fig.2 is a fragmentary vertical section showing; an adjustment of the -valvev means whereby the device can be emplo ed an indicator to test whethenthe cylinder is working properly; Fig. 3 1s a similar view-showing the adjustment for the device toconstitute a primer; and. Fi t a plan VlOW of the parts shown in l 2 and 3. v

In constructing our device in accordance with the illustrated example, the body of the plug is made of a form to be received in, the c linden and provided wit-ha core 11:, insu ted from the. body 10 by the;sleeve 12, the said bodyand core being pro'videdj at e ne nd, with. e min 1 Specification of.- Letters Iatent. s n ano nasmuch as, ism.

Patented Aug. 1=8, 1914.

Serial No. 756,649.

ginsnlating sleeve 12 may be held tothe body a y suitable m ne a by 14 which clam is the lateral flange l2 of'the sleeve again die upper end of the body, there being desirably a packing. 15 between the bonnet and shoulder. Near the lower end of; the core 11 a lateral shoulder 1.6 is fiormecl to receive a suitable packing 17. The upper end of the core is threaded, as at 11, and receives outside of the sleeve 12, a nut 18, the tighteningof which draws the inner shouldered end-of the core against the packing 17 which is seated, on a; shoulder 12 formed on the interior of thesleeve 12.

end 11" of the pore, above the nut 18, and serves n pract1ce, the double purposeof; a loclr nut and as a means to clamp a conlw r 11 s ma e uhu rrba n pro id with a through axial bore 29, an mounted bore '20 of the core 11, and forms a continuat'ion' thereof The upper end of the valve casing is in the form of a primer cup 23, the bottom of which commun cates with the'bore 22 of the valve casing. Fitted in the valve casing 21 is a'valve 24, illustrated as a cook having a transverse passage-25, which,' by the turning of the valve, may be brou ht into reg: ister with the bore'22 of the va ve casing, or disposed transversely thereon to close said bore and thus close the tubular core Ofitht:

The passage 25 in the valve2l is contracted at its inner end to provide a valve seat 26 on which an auxiliary valve 2,7 is adapted to seat, said-auxiliary valve being capablevof play in the passage 25 toward and from the seat 26.

In connection with the valve 24 and its passage 25, by passes are produced or the purpose of permitting a priming charge to pass from the cup23 to the tubular'sparlr plug, and for providing in another adjustwant of the valve Zl, ;1for o'hservi g ft-he workings of thegcylinder, permitting a portion of the products of'cornbustion 0t an pl arge to passar ndhe n a y. alv an mugh; he ma n. al w r ly hrou h, e-Pr m 0P to idileate vvhe-ther the cylinder is working'or working properly. Thus a byj-pass 28 in a' bonn A clamp nut 19 is received, on the threaded ductor wire (not shown)' vbet we.en the'nuts;

10.11 said cor 18 a; al e ce j g2 hi h. ha an axial through-bore 22 in line with the spark plug, as hereinafter. further; described. 7

- an open position with the auxiliary valve;

i 'der, so that portion of the products of "/comhustion Wlll pass around the valve through the by-passes 28, 29,- and out through the priming cup, to whether the particular cylinder to which the plug is afiixed is properly performing its functions. A third by-pass passage 30 is formed in the bore 22 of the valve casing below the valve 24, and when the valve 24 is turned to the position shown in Fig. 3, the by-passes 28, 80, will be in register with each other, and there will bea clear passage from the priming cup through the mainvalve passage 25, and tht bypasses 28, 30, to the spark plug, for the delivery of a priming charge around the auxiliary valve 27.

The valve24 has a lever handle 31 for turning the valve, and in practice, said handle will bear on one side the word Indicator and on the oppositeside the word Primer, as indicated in Fig. 4, and when said handle is turned to the vertical position the spark plug will be closed and free to perform its usual functions in the ordinary manner. If the handle be turned upwardly in one direction, say to the left, as in Figs. 2 and 4, the valve means 24, 26, will be so disposed as to allow the device to function as an in dicator; .while if the handle 31 be turned to the right, as in the dotted lines position in Fig; 4, and as shown in Fig. 3, the device may function as a primer. The valve 24 has any approved means for holding it tightly in place, being provided, for instance, with a stem 32 at the end opposite the handle 31, which stem receives washers 33, 34, between which is a helical spring 35, a cotter pin 36 being employed to retain the washers and spring in place,

Having thus described our invention, we claim as new, and desire to secure by Letters Patent:.

1. A spark plug having an axial throughbore, a priming cup communicating with said bore, a valve mounted to turn on an axis transecting the bore and formed with a transverse passage that is adapted to be brought into or out ofregister with the said bore and with the priming cu and an outwardly-opening auxiliary va ve commanding the passage in the main valve, the main valve being movable, to a closed position, to

on its seat, or to a position w1 th the auxiliary valve below its inverted" Seat indicate charge-through themain valve and past the seated auxiliary valve in the third mentioned position of the main valve.

2. A spark plug having a bore, a priming cup in-commumcation with said bore, a main valve having a passage and adapted to be turned to establish or cut 011' communication between the spark plug and priming cup, and an auxiliary valve in the passage of the main valve, there being a by-pass which, when the main valve is turned in one position, will pass fluid around the auxiliary valve fromthe 'priming cup to the spark plug.-

3. A spark plug having a bore, a main valve having a passage and adapted to be turned to close or to open the said bore, and an auxiliary valve movable with the main valve and commanding the passage therethrough and responsive to fluid pressure in the spark plug, there being a by-pass, and

the auxiliary valve being movable, in one.

position of the main valve, to permit out- How by way of the by-pass.

4. A spark plug having a bore, a main valve having a passage adapted to be turned to close or open the said bore, and an'auxiliary valve movable with the main valve.

and commanding the passage thereof,- and vresponsive to fluid pressure in the spark plug, there being a bypass, and the auxiliary valve being movable, in one position of the main valve, to permit inflow by way of the by-pass.

5. A spark plug, having a bore, a priming cup, and a valve means movable in one direction by gravity for cutting off communication from the priming cup to the spark plug, but movable in the opposite direction, in response to fluid pressure in the spark plug, to permit escape of products from the spark plug through the priming cup.

6. A spark plug having a bore, a priming cup on the spark .plug communicating with said, bore, a main valve adapted to be turned to bring its passage into or out of register with the said bore and cup, an auxiliary valve disposed in the passage of the main valve, there being a by-pass, and the auxiliary valve, in one positionof the main.

valve being free to respond to fluid pressure in the spark plug, and being movable, in response to such fluid pressure, to permit outflow, by way of the by-pass, from the-spark plug to the priming cup;

7. A spark plug having a bore,-a priming cupv on the sparkplug communicating with said bore, a main valve adapted to be turned to bring its passage into or out of register with the said bore and cup, {and an auxiliary valve disposed in the passage of'th'e valve, there being a by-pass, and the auxing with the through-passage of the valve iliary valve, in one position of the main casing. valve being free to respond to fluid pressure 9. A spark plug having sparking elements in the spark plug to permit inflow by Way and a passage, a cock having a passage and 5 of the by-pass from the priming cup to the turnable to bring its passage into or out spark plug. of register with the passage of the spark 8. A spark plug having a through-bore, a plug, and an auxiliary valve in the cock and valve casing on said bore, a priming cup on commanding the passage of the cock in ene said valve casing, there being a through-pasdirection, there being oppositely disposed an 10 sage in the valve casing establishing oomseats for the auxiliary valve on which Silid munication between the bore of the spark auxiliary valve rests according to the pnsi plug and the priming cup, a main valve in tion of the turnable cock. the form of a cock mounted in the valve cas- In testimony whereof We have signed our ing' and formed with a passage adapted to names to this specification in the presence of 35 15 be brought into or out of register with the two subscribing witnesses.

passage ofvthe valve casing, and an auX- AUGUST PHILIP SEISS iliary valve in the passage of the main valve there being a by-pass in the main valve com: GEORGE WILLIAM ROHRIG' municating with the main passage, and Witnesses: 20 by-pass passages in the valve casing above R. E. MILLER,

and below the main valve and communicat- J. H. HUGHES. 

